Hoover SilentAir 2000
Price:
$129.00This purifier is so popular in Japan that it’s been incorporated into bullet trains. The fanless setup, which relies solely on ionization, produces a low buzz rather than the quiet hum of the fan-based models. The SilentAir is also compact, energy-efficient (costing about $4 per year to operate), and has no moving parts to wear out.







